List Open Source Workout Trackers you use here.

Does anyone here use any Open-Source Workout Trackers? I've been using hevy, but their high fees, the fact that they are a company that holds my health data and has made no commitments to open source, User privacy, or fair trade practices like user data import/export has me looking around. I wanted to see if anyone had reliable open source alternatives.

Tell me your workout tracking stories here! Tell me what you liked and what you disliked.